Reston, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Reston, a community in Fairfax County, Virginia.
This Afternoon
84°F
Mostly Sunny
Mostly sunny, with a high near 84. North wind around 10 mph.
7-day forecast for Reston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 84°F | Mostly Sunny | 10 mph N | 10% |
| Tonight | 62°F | Mostly Cloudy | 9 mph N | 10% |
| Saturday | 78°F | Partly Sunny | 8 mph E | 10% |
| Saturday Night | 67°F | Mostly Cloudy | 8 mph SE | 10% |
| Sunday | 82°F | Partly Sunny then Chance Showers And Thunderstorms | 7 to 13 mph S | 49% |
| Sunday Night | 65°F | Showers And Thunderstorms Likely | 3 to 9 mph NW | 64% |
| Monday | 74°F | Chance Rain Showers | 8 to 12 mph NE | 41% |
| Monday Night | 62°F | Rain Showers Likely | 7 to 10 mph NE | 57% |
| Tuesday | 66°F | Rain Showers Likely | 12 mph NE | 60% |
| Tuesday Night | 56°F | Rain Showers Likely | 12 mph NE | 60% |
| Wednesday | 61°F | Chance Rain Showers | 12 mph NE | 54% |
| Wednesday Night | 56°F | Chance Showers And Thunderstorms | 10 mph NE | 51% |
| Thursday | 63°F | Chance Showers And Thunderstorms | 10 mph NE | 50% |
| Thursday Night | 55°F | Chance Showers And Thunderstorms | 8 mph N | 35% |
Forecast source: National Weather Service (api.weather.gov) for Reston (38.950, -77.346). Updated through the day.
Growing snapshot for Reston
Last spring frost
Apr 14
First fall frost
Oct 29
Growing season
198 days
Hardiness zone
7b
More local growing data for Reston: nearby ZIP 20190 weather · frost dates · planting calendar · Virginia frost dates
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Climate data from the nearest NOAA station, Vienna, Va (5.4 mi from Reston). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.